Intermittent sftp/ssh "packet corrupt" errors on RHEL systems

Solution Verified - Updated -

Issue

  • We are seeing intermittent errors from sftp. We see the following messages in /var/log/messages and /var/log/secure:

  • /var/log/messages errors:

Apr  8 09:13:29 hostname sftp-server[24572]: error: read: Connection reset by peer
Apr  8 09:13:38 hostname sftp-server[24563]: error: read: Connection reset by peer
Apr  8 09:13:47 hostname sftp-server[28148]: error: read: Connection reset by peer
Apr  8 09:14:21 hostname sftp-server[3523]: error: read: Connection reset by peer
  • /var/log/secure messages:
Apr  8 09:05:08 hostname sshd[30685]: Corrupted MAC on input.
Apr  8 09:05:08 hostname sshd[30685]: Disconnecting: Packet corrupt

Environment

  • Red Hat Enterprise Linux 5
  • NetXen NX3031 NICs

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